static int commview_read_packet(FILE_T fh, struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info) { commview_header_t cv_hdr; struct tm tm; if(!commview_read_header(&cv_hdr, fh, err, err_info)) return FALSE; switch(cv_hdr.flags & FLAGS_MEDIUM) { case MEDIUM_ETHERNET : phdr->pkt_encap = WTAP_ENCAP_ETHERNET; phdr->pseudo_header.eth.fcs_len = -1; /* Unknown */ break; case MEDIUM_WIFI : phdr->pkt_encap = WTAP_ENCAP_IEEE_802_11_WITH_RADIO; phdr->pseudo_header.ieee_802_11.fcs_len = -1; /* Unknown */ phdr->pseudo_header.ieee_802_11.channel = cv_hdr.channel; phdr->pseudo_header.ieee_802_11.data_rate = cv_hdr.rate | (cv_hdr.direction << 8); phdr->pseudo_header.ieee_802_11.signal_level = cv_hdr.signal_level_percent; break; case MEDIUM_TOKEN_RING : phdr->pkt_encap = WTAP_ENCAP_TOKEN_RING; break; default : *err = WTAP_ERR_BAD_FILE; *err_info = g_strdup_printf("commview: unsupported encap: %u", cv_hdr.flags & FLAGS_MEDIUM); return FALSE; } tm.tm_year = cv_hdr.year - 1900; tm.tm_mon = cv_hdr.month - 1; tm.tm_mday = cv_hdr.day; tm.tm_hour = cv_hdr.hours; tm.tm_min = cv_hdr.minutes; tm.tm_sec = cv_hdr.seconds; tm.tm_isdst = -1; phdr->rec_type = REC_TYPE_PACKET; phdr->presence_flags = WTAP_HAS_TS; phdr->len = cv_hdr.data_len; phdr->caplen = cv_hdr.data_len; phdr->ts.secs = mktime(&tm); phdr->ts.nsecs = cv_hdr.usecs * 1000; return wtap_read_packet_bytes(fh, buf, phdr->caplen, err, err_info); }
int commview_open(wtap *wth, int *err, gchar **err_info) { commview_header_t cv_hdr; if(!commview_read_header(&cv_hdr, wth->fh, err, err_info)) { if (*err != 0 && *err != WTAP_ERR_SHORT_READ) return -1; return 0; } /* If any of these fields do not match what we expect, bail out. */ if(cv_hdr.version != 0 || cv_hdr.year < 1970 || cv_hdr.year >= 2038 || cv_hdr.month < 1 || cv_hdr.month > 12 || cv_hdr.day < 1 || cv_hdr.day > 31 || cv_hdr.hours > 23 || cv_hdr.minutes > 59 || cv_hdr.seconds > 60 || cv_hdr.signal_level_percent > 100 || (cv_hdr.flags & FLAGS_RESERVED) != 0 || ((cv_hdr.flags & FLAGS_MEDIUM) != MEDIUM_ETHERNET && (cv_hdr.flags & FLAGS_MEDIUM) != MEDIUM_WIFI && (cv_hdr.flags & FLAGS_MEDIUM) != MEDIUM_TOKEN_RING)) return 0; /* Not our kind of file */ /* No file header. Reset the fh to 0 so we can read the first packet */ if (file_seek(wth->fh, 0, SEEK_SET, err) == -1) return -1; /* Set up the pointers to the handlers for this file type */ wth->subtype_read = commview_read; wth->subtype_seek_read = commview_seek_read; wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_COMMVIEW; wth->file_encap = WTAP_ENCAP_PER_PACKET; wth->tsprecision = WTAP_FILE_TSPREC_USEC; return 1; /* Our kind of file */ }
static gboolean commview_seek_read(wtap *wth, gint64 seek_off, union wtap_pseudo_header *pseudo_header, guint8 *pd, int length, int *err, gchar **err_info) { commview_header_t cv_hdr; int bytes_read; if(file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1) return FALSE; if(!commview_read_header(&cv_hdr, wth->random_fh, err, err_info)) { if(*err == 0) *err = WTAP_ERR_SHORT_READ; return FALSE; } if(length != cv_hdr.data_len) { *err = WTAP_ERR_BAD_FILE; *err_info = g_strdup_printf("commview: record length %u doesn't match requested length %d", cv_hdr.data_len, length); return FALSE; } commview_set_pseudo_header(&cv_hdr, pseudo_header); bytes_read = file_read(pd, cv_hdr.data_len, wth->random_fh); if(bytes_read != cv_hdr.data_len) { *err = file_error(wth->random_fh, err_info); if(*err == 0) *err = WTAP_ERR_SHORT_READ; return FALSE; } return TRUE; }
static gboolean commview_read(wtap *wth, int *err, gchar **err_info, gint64 *data_offset) { commview_header_t cv_hdr; struct tm tm; int bytes_read; *data_offset = wth->data_offset; if(!commview_read_header(&cv_hdr, wth->fh, err, err_info)) return FALSE; wth->data_offset += COMMVIEW_HEADER_SIZE; switch(cv_hdr.flags & FLAGS_MEDIUM) { case MEDIUM_ETHERNET : wth->phdr.pkt_encap = WTAP_ENCAP_ETHERNET; break; case MEDIUM_WIFI : wth->phdr.pkt_encap = WTAP_ENCAP_IEEE_802_11_WITH_RADIO; break; case MEDIUM_TOKEN_RING : wth->phdr.pkt_encap = WTAP_ENCAP_TOKEN_RING; break; default : *err = WTAP_ERR_BAD_FILE; *err_info = g_strdup_printf("commview: unsupported encap: %u", cv_hdr.flags & FLAGS_MEDIUM); return FALSE; } commview_set_pseudo_header(&cv_hdr, &wth->pseudo_header); buffer_assure_space(wth->frame_buffer, cv_hdr.data_len); bytes_read = file_read(buffer_start_ptr(wth->frame_buffer), cv_hdr.data_len, wth->fh); if(bytes_read != cv_hdr.data_len) { *err = file_error(wth->fh, err_info); if(*err == 0) *err = WTAP_ERR_SHORT_READ; return FALSE; } tm.tm_year = cv_hdr.year - 1900; tm.tm_mon = cv_hdr.month - 1; tm.tm_mday = cv_hdr.day; tm.tm_hour = cv_hdr.hours; tm.tm_min = cv_hdr.minutes; tm.tm_sec = cv_hdr.seconds; tm.tm_isdst = -1; wth->data_offset += cv_hdr.data_len; wth->phdr.presence_flags = WTAP_HAS_TS; wth->phdr.len = cv_hdr.data_len; wth->phdr.caplen = cv_hdr.data_len; wth->phdr.ts.secs = mktime(&tm); wth->phdr.ts.nsecs = cv_hdr.usecs * 1000; return TRUE; }
static int commview_read_packet(FILE_T fh, struct wtap_pkthdr *phdr, Buffer *buf, int *err, gchar **err_info) { commview_header_t cv_hdr; struct tm tm; guint frequency; if(!commview_read_header(&cv_hdr, fh, err, err_info)) return FALSE; switch(cv_hdr.flags & FLAGS_MEDIUM) { case MEDIUM_ETHERNET : phdr->pkt_encap = WTAP_ENCAP_ETHERNET; phdr->pseudo_header.eth.fcs_len = -1; /* Unknown */ break; case MEDIUM_WIFI : phdr->pkt_encap = WTAP_ENCAP_IEEE_802_11_WITH_RADIO; phdr->pseudo_header.ieee_802_11.fcs_len = -1; /* Unknown */ phdr->pseudo_header.ieee_802_11.decrypted = FALSE; phdr->pseudo_header.ieee_802_11.datapad = FALSE; phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_UNKNOWN; phdr->pseudo_header.ieee_802_11.presence_flags = PHDR_802_11_HAS_CHANNEL | PHDR_802_11_HAS_DATA_RATE | PHDR_802_11_HAS_SIGNAL_PERCENT; switch (cv_hdr.band) { case BAND_11A: phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_11A; phdr->pseudo_header.ieee_802_11.phy_info.info_11a.presence_flags = PHDR_802_11A_HAS_TURBO_TYPE; phdr->pseudo_header.ieee_802_11.phy_info.info_11a.turbo_type = PHDR_802_11A_TURBO_TYPE_NORMAL; frequency = ieee80211_chan_to_mhz(cv_hdr.channel, FALSE); break; case BAND_11B: phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_11B; phdr->pseudo_header.ieee_802_11.phy_info.info_11b.presence_flags = 0; frequency = ieee80211_chan_to_mhz(cv_hdr.channel, TRUE); break; case BAND_11G: phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_11G; phdr->pseudo_header.ieee_802_11.phy_info.info_11g.presence_flags = PHDR_802_11G_HAS_MODE; phdr->pseudo_header.ieee_802_11.phy_info.info_11g.mode = PHDR_802_11G_MODE_NORMAL; frequency = ieee80211_chan_to_mhz(cv_hdr.channel, TRUE); break; case BAND_11A_TURBO: phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_11A; phdr->pseudo_header.ieee_802_11.phy_info.info_11a.presence_flags = PHDR_802_11A_HAS_TURBO_TYPE; phdr->pseudo_header.ieee_802_11.phy_info.info_11a.turbo_type = PHDR_802_11A_TURBO_TYPE_TURBO; frequency = ieee80211_chan_to_mhz(cv_hdr.channel, FALSE); break; case BAND_SUPERG: phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_11G; phdr->pseudo_header.ieee_802_11.phy_info.info_11g.presence_flags = PHDR_802_11G_HAS_MODE; phdr->pseudo_header.ieee_802_11.phy_info.info_11g.mode = PHDR_802_11G_MODE_SUPER_G; frequency = ieee80211_chan_to_mhz(cv_hdr.channel, TRUE); break; case BAND_11N_5GHZ: phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_11N; phdr->pseudo_header.ieee_802_11.phy_info.info_11n.presence_flags = 0; frequency = ieee80211_chan_to_mhz(cv_hdr.channel, FALSE); break; case BAND_11N_2_4GHZ: phdr->pseudo_header.ieee_802_11.phy = PHDR_802_11_PHY_11N; phdr->pseudo_header.ieee_802_11.phy_info.info_11n.presence_flags = 0; frequency = ieee80211_chan_to_mhz(cv_hdr.channel, TRUE); break; case BAND_PUBLIC_SAFETY: /* * XXX - what do we do here? What are the channel * numbers? How do we distinguish the several * different flavors of 4.9 GHz frequencies? */ frequency = 0; break; default: frequency = 0; break; } if (frequency != 0) { phdr->pseudo_header.ieee_802_11.presence_flags |= PHDR_802_11_HAS_FREQUENCY; phdr->pseudo_header.ieee_802_11.frequency = frequency; } phdr->pseudo_header.ieee_802_11.channel = cv_hdr.channel; phdr->pseudo_header.ieee_802_11.data_rate = cv_hdr.rate | (cv_hdr.direction << 8); phdr->pseudo_header.ieee_802_11.signal_percent = cv_hdr.signal_level_percent; /* * XXX - these are positive in captures I've seen; does * that mean that they are the negative of the actual * dBm value? (80 dBm is a bit more power than most * countries' regulatory agencies are likely to allow * any individual to have in their home. :-)) * * XXX - sometimes these are 0; assume that means that no * value is provided. */ if (cv_hdr.signal_level_dbm != 0) { phdr->pseudo_header.ieee_802_11.signal_dbm = -cv_hdr.signal_level_dbm; phdr->pseudo_header.ieee_802_11.presence_flags |= PHDR_802_11_HAS_SIGNAL_DBM; } if (cv_hdr.noise_level != 0) { phdr->pseudo_header.ieee_802_11.noise_dbm = -cv_hdr.noise_level; phdr->pseudo_header.ieee_802_11.presence_flags |= PHDR_802_11_HAS_NOISE_DBM; } break; case MEDIUM_TOKEN_RING : phdr->pkt_encap = WTAP_ENCAP_TOKEN_RING; break; default : *err = WTAP_ERR_BAD_FILE; *err_info = g_strdup_printf("commview: unsupported encap: %u", cv_hdr.flags & FLAGS_MEDIUM); return FALSE; } tm.tm_year = cv_hdr.year - 1900; tm.tm_mon = cv_hdr.month - 1; tm.tm_mday = cv_hdr.day; tm.tm_hour = cv_hdr.hours; tm.tm_min = cv_hdr.minutes; tm.tm_sec = cv_hdr.seconds; tm.tm_isdst = -1; phdr->rec_type = REC_TYPE_PACKET; phdr->presence_flags = WTAP_HAS_TS; phdr->len = cv_hdr.data_len; phdr->caplen = cv_hdr.data_len; phdr->ts.secs = mktime(&tm); phdr->ts.nsecs = cv_hdr.usecs * 1000; return wtap_read_packet_bytes(fh, buf, phdr->caplen, err, err_info); }